class_docstr: Impl operator get and put by different shared_type.
class_docstr_tok: ["Impl","operator","get","and","put","by","different","shared_type","."]
code: def get(self):
      assert self._shared_type is not None and len(self._ops) != 0
      op = self._ops[-1]
      if self._shared_type != SharedType.Shareable:
          self._ops.pop()
      return op
  
file_path: towhee/towhee/runtime/operator_manager/operator_pool.py
imports: from typing import Dict, List
  import threading
  from towhee.operator import Operator, SharedType
  from .operator_loader import OperatorLoader
label_desc: Use image node_id 3 for calling the _OperatorStorage obj's underlying member method code with example usage: obj.get() and returns: op